She could throw off Atlas' burden and not break a sweat. She would end Sisyphus' struggles and only say "It's done." She could stare into the face of a cockatrice and smirk at its insolence in her presence.
She's coming back in S5. And her episode is being written by a newcomer. Weird that we've been getting so many one shots. I think a lot of them know McCarthy in some way. She knows GM Berrow pretty well and the guy writing the new Maud/Pie family episode worked with her on a show she used to run.
@Itsthinking While I'll give you the other two, it's hard for me to imagine Maud smirking at anything, much less a cockatrice. I imagine she would simply give it the same blank emotionless stare that she gives everything else.